Add RP power control scripts

rp_start_uhubctl

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+#!/bin/sh
+
+# Host where the smart USB hub is connected
+# (uhubctl must be installed on the host)
+export HOST=rpi-3
+export HOSTPORT=22
+# Hub port where the RedPitaya is connected
+export HUBPORT=4
+# RedPitaya hostname
+export RP_HOST=rp-f0612e
+
+# Get power-on time & date
+TIMESTAMP_PRETTY=$(date '+%Y-%m-%d %H:%M:%S')
+# Power on RedPitaya connected to the smart USB hub
+# (assume that only 1 hub is connected)
+ssh -p $HOSTPORT $HOST "uhubctl -a on -p $HUBPORT"
+echo "RP powered on at $TIMESTAMP_PRETTY."
+
+# Check if RedPitaya becomes connectable from network by pinging
+while true
+do
+    ping $RP_HOST -c 1 >/dev/null 2>/dev/null && break
+done
+# Print time when RedPitaya ready on network
+TIMESTAMP_PRETTY=$(date '+%Y-%m-%d %H:%M:%S')
+echo "RP becomes connectable at $TIMESTAMP_PRETTY."

rp_stop_uhubctl

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+#!/bin/sh
+
+# Host where the smart USB hub is connected
+# (uhubctl must be installed on the host)
+export HOST=rpi-3
+export HOSTPORT=22
+# Hub port where the RedPitaya is connected
+export HUBPORT=4
+# RedPitaya hostname and root information
+export RP_HOST=rp-f0612e
+
+# Issue shutdown on the RedPitaya
+echo "Requesting shutdown on RP at $RP_HOST. Please enter password."
+ssh -o PubkeyAuthentication=no -o PreferredAuthentications=password root@$RP_HOST "shutdown 0"
+
+# Check if RedPitaya has been disconnected from network by pinging
+while ping $RP_HOST -c 1 >/dev/null 2>/dev/null
+do
+    true
+done
+# Print time when RedPitaya is down on network
+TIMESTAMP_PRETTY=$(date '+%Y-%m-%d %H:%M:%S')
+echo "RP disconnected at $TIMESTAMP_PRETTY."
+# Wait 15 seconds
+sleep 15
+
+# Get power-off time & date
+TIMESTAMP_PRETTY=$(date '+%Y-%m-%d %H:%M:%S')
+# Power off RedPitaya connected to the smart USB hub
+# (assume that only 1 hub is connected)
+ssh -p $HOSTPORT $HOST "uhubctl -a off -p $HUBPORT"
+echo "RP powered off at $TIMESTAMP_PRETTY."